Restructuring - Summary of Restructuring Liability (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 634
Costs Incurred	60
Payments	(474)
Ending Balance	220
Cumulative Costs Incurred to Date	6,045
2015 Initiatives | Employee Severance Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	0
Costs Incurred	0
Payments	0
Ending Balance	0
Cumulative Costs Incurred to Date	4,131
2015 Initiatives | Facility Exit Related Costs
Restructuring Reserve [Roll Forward]
Beginning Balance	634
Costs Incurred	60
Payments	(474)
Ending Balance	220
Cumulative Costs Incurred to Date	$ 1,914